Self-adaptive non-uniformity correction method for carrying image registration on infrared video sequence

Abstract

The invention discloses a self-adaptive non-uniformity correction method for carrying image registration on infrared video sequence. The method is characterized by, to begin with, carrying out mutual correlation information calculating by utilizing row / line projection vectors of an image; then, searching the displacement amount in the horizontal direction and vertical direction respectively, which allows the mutual correlation information to be maximal, the displacement amount being displacement value of the image; carrying out threshold value judgment on the variance of the image, adding assumed displacement, then, carrying out two-way registration on the image according to the corrected displacement value to obtain a superposed overlapping region; and carrying out correction parameter update on the image in the overlapping region to finish the self-adaptive correction process of the non-uniformity correction method. The innovation point of the method is characterized in that the problem of ghost image can be effectively removed by utilizing the image registration to carry out non-uniformity correction; through the adding of the two-way registration, the overlapping region of the image is improved, and registering effect of the image is enhanced; and through the adding of the self-adaptive assumed displacement, scene adaptation capability of the algorithm can be enhanced.

Description

technical field [0001] The invention belongs to the field of non-uniformity correction of infrared thermal imaging systems, in particular to an adaptive non-uniformity correction method using image registration for infrared video sequences. Background technique [0002] The 21st century is the era of photons and the society of information. With the rapid development of information technology, the means for people to obtain information are expanding to different bands and wider fields; infrared imaging technology is in line with the development of this era The trend has become one of the emerging high-tech for both military and civilian purposes that developed countries in the world are vigorously developing. Due to the blockade of my country's high-tech by western developed countries, coupled with the late start of my country's infrared imaging research, basic theoretical research and material technology are relatively backward, so the performance and development of the dome...

AI Technical Summary

Problems solved by technology

However, this type of algorithm is difficult to achieve a practical level due to its more restrictive requirements, large amount of calculation and storage, and the correction error is easy to accumulate and spread step by step.

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